Hamburg. Unesco-Institut fur Padagogik & Yates, A. (1971). The Role of research in educational change. Pacific Books.
Lua i Stíl Chicago (17ú heag.)Hamburg. Unesco-Institut fur Padagogik agus Alfred Yates. The Role of Research in Educational Change. Palo Alto, Calif: Pacific Books, 1971.
Lua MLA (9ú heag.)Hamburg. Unesco-Institut fur Padagogik agus Alfred Yates. The Role of Research in Educational Change. Pacific Books, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.